The learning modules in this course should provide you with everything you need to learn to create motion graphics using 3D software. Use the list in the right column to navigate to close to 100 short videos that explain all aspects of working in Cinema 4D. We would suggest that you first go through the Basics, even if you are familiar with 3D and learn the basic interface. From there, you could skip to the Core Exercises or try a Step by Step tutorial.
The Core Exercises are designed to be challenging, but also to teach you all of the basic skills you need to work in 3D successfully. If you are able to duplicate them, you should be prepared to start creating anything you want on your own.